Wajib salat

Wajib As-salat are compulsory, non-performance of which renders one a sinner. However the evidence of the obligation is open to interpretation, with some of the madhab saying it is obligatory while others saying it is optional. To deny that a fard salah is obligatory is an act of disbelief while denying the obligation of a wajib salah is not disbelief. There are some who believe that as the 5 prayers are obligatory, it automatically renders all other prayers optional.